英语语法分析

The nanometer tetragonal polycrystal zirconia powder was prepared by the super alkaline method at low temperature.

利用低温超强碱法制备出了纳米四方多晶氧化锆粉体。

Under the high temperature and high pressure, the hexagonal graphite crystals can change into the tetragonal diamond crystals.

在高温高压下，六方晶格的石墨转变为立方晶格的金刚石。

We also study the relation between the dielectric constant and lattice distortion of the PT tetragonal and cubic phase region.

我们还研究了PT四方相区和立方相区介电常数与晶格畸变的关系。